140 results about "Corrosion reaction" patented technology

The invention relates to a self-repairing anti-corrosion water-based paint applied to the field of paint compositions, which is prepared by the following steps: firstly, preparing a self-repairing microcapsule encapsulated with a self-repairing agent and a corrosion inhibitor, and then uniformly dispersing the self-repairing microcapsule into water-based base resin under a low-shear condition; the prepared coating can be applied to the surface of a pretreated metal base material in a brush coating, spray coating or blade coating mode and the like, a micron-sized anti-corrosion coating is formed after curing, under the normal condition, the microcapsules are placed in the coating in a standing mode and do not work, when scratches occur, the self-repairing microcapsules are broken and play a role, and the corrosion resistance of the coating is improved. The self-repairing agent rapidly fills and heals the damaged part of the coating to form a new barrier layer, the corrosion inhibitor forms a protective film on the exposed metal surface to inhibit the corrosion reaction, and the synergistic mechanism can effectively delay the corrosion diffusion of the scratched part, so that the protection integrity of the coating on the base material is maintained, and the service life of the coating is prolonged. And the coating can be suitable for metal structure protection in severe environments such as ocean climate, high-humidity and high-salt environments, acid rain regions, chemical environments and the like.

The invention discloses a method for controlling CMP (chemical mechanical polishing) dish-shaped pits, corrosion pits and interface corrosion of ruthenium barrier layer copper wiring, which is suitable for a manufacturing process of integrated circuits of 14 nanometers and below. According to the method, a specifically synthesized TTAK corrosion inhibitor is introduced into a polishing solution system, the oriented adsorption characteristic of the molecular structure of the TTAK corrosion inhibitor is utilized, the corrosion reaction of copper is selectively inhibited, meanwhile, the normal material removal efficiency of a ruthenium barrier layer and a TEOS dielectric layer is maintained, and cooperative regulation and control of the removal rate of the Cu / Ru / TEOS material are achieved. By means of the method, dished pits, corrosion pits and Fang type interface defects generated in the fine polishing and barrier layer polishing process can be effectively eliminated, and copper / ruthenium interface corrosion is improved. According to the method, the global planarization quality of the copper interconnection ruthenium barrier layer is remarkably improved, the interface bonding strength and the electrical reliability of an interconnection circuit are enhanced, and an effective solution is provided for performance optimization of an advanced process integrated circuit device.

The invention provides a perovskite solar cell and a preparation method thereof. The perovskite solar cell comprises a transparent substrate layer, a hole transport layer or an electron transport layer, a perovskite active layer, a hole transport layer or an electron transport layer and a composite electrode layer which are sequentially arranged from bottom to top, the composite electrode layer is of a double-layer composite structure composed of a first metal layer and a second metal layer, and the first metal layer is a molybdenum metal layer. The high chemical stability and compact structure of the molybdenum metal layer are utilized, a physical barrier is formed between the perovskite active layer and the second metal layer, migration of halogen ions such as iodine (I-) to the top electrode is effectively inhibited, direct corrosion reaction between the second metal layer and the halogen ions is avoided, and the stability of long-term operation of the device is remarkably improved.

The invention introduces a method for preparing artificial rutile by using reduced ilmenite, which comprises the following steps: S1, adding reduced ilmenite into a corrosion tank, introducing oxidizing gas to carry out corrosion reaction, and washing and separating the reaction product through a cyclone and a high-frequency sieve to obtain primary artificial rutile and hydrated iron oxide slurry; s2, carrying out filter pressing on the hydrated iron oxide slurry obtained in the step S1 by using a filter press, and preparing refined iron oxide from the obtained iron oxide slurry; s3, the primary artificial rutile obtained in the step S1 is washed and then subjected to a hydrochloric acid leaching reaction, a mixed material obtained after acid leaching enters a thickener, and supernatant returns to prepare an acid leaching solution; feeding lower-layer ore grains into a belt filter for deacidification and washing; and S4, drying the cleaned primary artificial rutile obtained in the step S3 through a drying cylinder to obtain the finished artificial rutile. Industrial hydrochloric acid is used as a rusting agent, and compared with ammonium chloride, the product Fe (OH) 3 can be separated more easily. Oxidizing gas used for rusting is mixed gas of air and pure oxygen, and the mixing proportion of the air and the pure oxygen can be dynamically adjusted according to different rusting raw materials, so that the reaction condition is in an optimal state. In the corrosion and acid leaching processes, the recycling efficiency of the liquid raw material is extremely high, and the prepared artificial rutile meets the requirements of a chlorination process titanium dioxide raw material. The whole process flow is reasonable in design, simple to operate, free of environmental pollution and easy for industrial production.

The invention discloses a metal stack cavity header tube region polar plate anti-corrosion structure and an applied stack thereof. The stack comprises a plurality of groups of stacked metal bipolar plates, wherein a corrosion sacrifice structure is arranged on the metal bipolar plate on the high-voltage side of a fuel cell stack close to the liquid outlet side of a circulation cavity in an extending manner along a second direction; according to the corrosion sacrifice structure, the overlapped edge area of the metal bipolar plate and the insulating sealing gasket can be subjected to electrochemical corrosion preferentially, corrosion of the interior of a galvanic pile to a polar plate material is reduced and avoided, a corrosion reaction can occur preferentially in a designed corrosion area, and on the premise that the material cost is not increased and the design compactness is not sacrificed, the service life of the galvanic pile is prolonged. The discharge area can be effectively increased, corrosion current can be intercepted in advance, the corrosion resistance of the metal bipolar plate is effectively improved, the highest potential and the reaction active area of the adjacent power generation unit are protected, and the service life of the fuel cell stack is remarkably prolonged.

The application provides high-strength spherical activated carbon and a preparation method thereof; on one hand, sulfuric acid and a promoter system are used, over-sulfuric acid (H2SO5) is generated by the reaction of the sulfuric acid and the promoter, the oxidizability of the system is significantly enhanced in a short time, and the system has certain acidity, so that the removal of -H is realized on the basis of protection of the main chain structure of a polymer; on the other hand, iron ions are added, the corrosion to a reaction container can be inhibited, the reaction condition is mild, the material requirement of the reaction container is relatively low, and meanwhile, the yield and the strength of the spherical activated carbon are improved.

The present application provides an electro-osmosis moisture-proof anode and a moisture-proof system, which belong to the field of electro-osmosis moisture-proof dehumidification technology. The electro-osmosis moisture-proof anode includes a main electrode and an auxiliary electrode; wherein the auxiliary electrode includes a first conductive coating and a second conductive coating; the first conductive coating is coated on the surface of the wall, the second conductive coating is coated on the surface of the first conductive coating, and the main electrode is clamped and fixed between the first conductive coating and the second conductive coating. With the electro-osmosis moisture-proof anode provided by the present application, during the specific installation and construction, it is only necessary to coat the conductive coating on the wall surface and clamp the main electrode between the two conductive coatings, which will not cause damage to the wall surface and has low construction difficulty. At the same time, the main electrode is not in direct contact with the wall, and no electrochemical corrosion reaction will occur. The service life is long and the equipment cost is low.

The utility model relates to the technical field of reaction kettles, and discloses a pressure-resistant anti-corrosion reaction kettle which comprises a reaction kettle body, a pressure-resistant ring is fixedly connected to the outer surface of the reaction kettle body, a support is fixedly connected to the outer surface of the pressure-resistant ring, reinforcing ribs are fixedly connected to the interior of the reaction kettle body, and the reinforcing ribs are fixedly connected to the outer surface of the support. The inner wall of the reaction kettle body is fixedly connected with a pressure-resistant layer. The reaction kettle has the following advantages and effects that the first corrosion-resistant layer performs corrosion-resistant protection on the inner wall of the reaction kettle body, and the second corrosion-resistant layer performs corrosion-resistant protection on the surface of the reaction kettle body, so that the inside and the outside of the reaction kettle body have a corrosion-resistant effect, corrosion of high-acid-base materials is avoided, the wear-resistant layer prevents the inner wall from being worn, and the service life of the reaction kettle is prolonged. The acid and alkali resistant layer can resist acid and alkali erosion, and meanwhile, under the action of the heat preservation layer, the first corrosion resistant layer and the second corrosion resistant layer have a heat preservation effect, so that materials in the reaction kettle body are prevented from being influenced by temperature, protection is more comprehensive and diversified, and the service life of the reaction kettle body is prolonged.

The invention discloses a galvanic corrosion test system for simulating a high-temperature steam-water environment. The galvanic corrosion test system comprises an experiment barrel, a dissolved oxygen monitoring unit and a temperature, pH and conductivity monitoring unit, a barrel cover is mounted at the top of the experiment barrel, a working electrode clamp is mounted in the experiment barrel, a working electrode groove is formed in the working electrode clamp, a working electrode is mounted in the working electrode groove, and a galvanic corrosion reaction is carried out in the experiment barrel; the dissolved oxygen monitoring unit comprises an oxygen conveying pipe connected to the experiment barrel, and oxygen is input into the experiment barrel through the oxygen conveying pipe, so that the dissolved oxygen amount of the electrolyte is increased; the device further comprises a dissolved oxygen monitor, the electrolyte in the experiment barrel is input into the dissolved oxygen monitor to monitor the dissolved oxygen amount in real time, and the electrolyte in the dissolved oxygen monitor is monitored and then flows back into the experiment barrel. The temperature, pH and conductivity monitoring unit comprises a temperature sensing electrode, a pH sensing electrode and a conductivity sensing electrode which are connected to the experiment barrel and are respectively used for monitoring the temperature value, the pH value and the conductivity value of the electrolyte.

The utility model provides a clothes recycling box with a hidden door lock, and relates to the technical field of clothes recycling boxes with hidden door locks, the clothes recycling box comprises a box body, a clothes placing door is rotatably connected to the box body, a clothes taking door is hinged to the box body, a lock body is fixedly connected to the clothes taking door, a collecting box is arranged in the box body, and the lock body is fixedly connected to the collecting box. A protective structure is arranged on the clothes taking door, the protective structure is mainly composed of two sliding ways, the two sliding ways are both fixedly connected to the clothes taking door, a protective plate is jointly connected to the two sliding ways in a sliding mode, a sealing ring is fixedly connected to the clothes taking door, a sealing groove is formed in the protective plate, and the sealing ring is fixedly connected to the clothes taking door. The utility model solves the problems that the existing clothes recycling box is mostly directly placed outdoors, and the lock body on the clothes box can accelerate the water accumulation on the surface of the lock body in a high-humidity environment and promote the corrosion reaction, especially in a rainy day, the corrosion is easily caused.

The present invention discloses a method for enhancing methane production and carbon sequestration in anaerobic digestion by zero-valent iron in cooperation with exogenous CO2. The method includes: inoculating sludge in a reactor, adding zero-valent iron thereto, and then adding wastewater. The reaction temperature is maintained at 35 ± 1 °C, and CO2 is injected into the liquid surface at a flow rate of 1.5 L / min for 5 - 50 min / L under stirring. CO2 and zero-valent iron jointly regulate the pH of the system, providing a suitable anaerobic digestion environment for microorganisms. Through the corrosion reaction of zero-valent iron under anaerobic conditions, electrons are released and H2 is generated, stimulating the proliferation of hydrogen-consuming microorganisms, while improving the activity of microorganisms and enzymes, increasing the methane production and rate. In addition, some methanogens in the system utilize H2 and CO2 to produce amorphous carbon, and zero-valent iron and exogenous CO2 are used to regulate the growth of amorphous carbon, strengthening the fixation of CO2 in the system.

The invention relates to the technical field of metal surface treatment process auxiliary equipment, and discloses a method for prolonging the service life of a loading hanger for a special polishing and washing process, which comprises the following steps: S1, a spray gun nozzle is matched with carborundum to carry out sand blasting treatment on the hanger; s2, an alkali washing degreasing agent is matched with ultrasonic power cleaning equipment for cleaning; s3, the hanging tool is put into an oven to be heated step by step, and a Teflon powder material is evenly sprayed and attached to the surface of the hanging tool from top to bottom through a spray gun; s4, after spraying is completed, the hanging tool is moved into a constant-temperature oven, the temperature is set, constant-temperature curing is conducted, and then heating is stopped till the hanging tool is naturally cooled to the normal temperature; the titanium alloy hanger base body and the Teflon protection layer are used in cooperation, hydrofluoric acid corrosion resistance and high temperature resistance of Teflon are utilized, a compact protection film is formed on the surface of the hanger, and passive film damage and metal corrosion reaction are avoided; and meanwhile, the binding force of the protective layer and the base body is improved through the sand blasting roughening process, and the service life of the hanger is prolonged.

The utility model discloses an electrochemical test experimental device for boiling nitric acid corrosion in a high-temperature reduced-pressure environment, which relates to the technical field of electrochemical test and consists of a reduced-pressure boiling corrosion reaction system, an electrochemical test system, a heating system, an acid gas absorbing and drying system, a vacuum degree control system and an automatic integrated control system. The decompression boiling corrosion reaction system is connected with the acid gas absorption and drying system, the vacuum degree control system and the heating system are respectively connected with the acid gas absorption and drying system and are in contact with the decompression boiling corrosion reaction system, and an automatic integrated control system is adopted to control the experimental device. The experimental device disclosed by the utility model can test and simulate the electrochemical corrosion behavior of high-temperature reduced-pressure boiling nitric acid in the environment of the evaporator for spent fuel post-treatment, and can realize weight loss and electrochemical test of various materials under the condition of reduced-pressure boiling strong corrosive solution at the same time.

This invention discloses a high-temperature liquid sodium-metal oxidation corrosion experimental system, relating to the field of corrosion resistance testing devices. It includes an experimental body, a gas path system, a heating coil, multiple thermocouples, a controller, and a DC power supply. The experimental body comprises a pressure-holding container, multiple independent sample containers, and a positioning disk. Each sample container consists of hollow bolts, nuts, annular gaskets, and a wire mesh wick. The metal sample is placed on the wire mesh wick. The gas path system is connected to the pressure-holding container. The heating coil is wound around the outer surface of the pressure-holding container, and the thermocouples are inserted into the pressure-holding container. The controller is connected to both the thermocouples and the DC power supply, which is also connected to the heating coil. The wire mesh wick, metal samples, and sample containers are made of the same material, thus avoiding interference with the corrosion reaction of the metal samples. The sample containers are independent, and different metal samples do not affect each other. Combining different oxygen contents, metal samples, and wire mesh wick mesh sizes allows for the acquisition of richer experimental data in a single operation.

The invention relates to the technical field of water electrolysis hydrogen production, in particular to an oxygen evolution catalyst and a preparation method and application thereof. The preparation method of the oxygen evolution catalyst comprises the following steps: dissolving metal salt in deionized water to prepare a precursor metal solution; immersing the foam metal substrate into the precursor metal solution, carrying out corrosion reaction in an oxygen-containing atmosphere, forming a nickel-cobalt-iron layered hydroxide nanosheet on the foam metal substrate, and preparing an oxygen evolution catalyst; wherein the metal salt comprises two of nickel salt, cobalt salt and iron salt; the foam metal substrate comprises one of a foam nickel substrate, a foam cobalt substrate and a foam iron substrate; metal elements contained in the metal salt are different from metal elements contained in the foam metal substrate. The preparation method of the oxygen evolution catalyst provided by the invention is simple in process and low in raw material cost, and the prepared oxygen evolution catalyst has relatively high oxygen evolution reaction activity and stability.

The present invention relates to the technical field of oilfield power grids, and in particular to an anti-electrical corrosion testing device for ADSS optical cables of oilfield power grids, which solves the problem of being unable to understand the anti-electrical corrosion performance of optical cables, resulting in a short service life. The device comprises a detector, wherein a cable groove is provided inside the detector, an optical cable is installed inside the cable groove, an immersion mechanism is installed inside the detector, fixing mechanisms are symmetrically installed at both ends of the detector, and a detection mechanism is installed on the front of the detector. The device sets contacts to contact the surface of the optical cable, so that an electromagnet generates magnetism, and the magnetism is the same as that of a magnetic block, so that the magnetic block moves under the action of the electromagnet, and then drives a rotating ring to rotate, so that a pointer points to a scale line on the inner wall of a dial after the rotating ring rotates, thereby indicating the size and start time of the electric corrosion reaction on the optical cable at this time, thereby indirectly reflecting the anti-electrical corrosion strength of the optical cable, and facilitating the selection of optical cables by staff.

The invention discloses a preparation method and application of a zinc negative electrode of a pre-corrosion in-situ modified water-based zinc ion battery, and provides the water-based zinc ion battery at the same time. The zinc negative electrode of the pre-corrosion modified aqueous zinc ion battery is one of a pre-corrosion in-situ zinc tungstate composite zinc electrode (ZnWO), a pre-corrosion in-situ zinc molybdate composite zinc electrode (ZnMoO), a pre-corrosion in-situ zinc vanadate composite zinc electrode (ZnVO) and a pre-corrosion in-situ zinc silicate composite zinc electrode (ZnSiO). The application of the corrosion reaction on the surface of the metal zinc negative electrode is discussed for the first time, the corrosion reaction on the surface of zinc is utilized to form the corresponding compact, multifunctional, stable and insoluble pre-corrosion in-situ zinc salt composite zinc electrode, various side reactions are relieved, uniform zinc deposition is guaranteed, the zinc is not prone to falling off in the repeated zinc deposition stripping process, and the service life of the zinc electrode is prolonged. And finally, stable and long-acting application of the aqueous zinc ion battery is realized.

This application discloses an electrode structure, a battery cell, and a battery. The electrode structure includes a current collector, a first coating layer, and a second coating layer. Along the thickness direction of the current collector, the first coating layer is disposed on at least one side of the current collector; and along the thickness direction of the current collector, the second coating layer and the first coating layer are located on the same side. Along the width direction of the current collector, the second coating layer is disposed on at least one side of the first coating layer. The static voltage of the second coating layer is lower than the static voltage of the first coating layer. In the electrode structure of this application embodiment, the static voltage of the second coating layer is lower than the static voltage of the first coating layer, thus reducing the oxidation potential at the interface between the active material and the tab, reducing the oxidation potential at the interface between the active material and the tab (enriched electrolyte), thereby greatly reducing the corrosion reaction rate, reducing the risk of corrosion fracture at the interface between the positive electrode active material and the tab, and improving the cycle performance of the battery.

The present invention relates to a material corrosion testing system based on a complex environment of high-temperature ammonia decomposition, comprising a corrosive medium configuration mechanism, a corrosive environment control mechanism and a corrosive reaction mechanism; the corrosive medium configuration system comprises a gas cylinder, a gas pressure stabilizing device and a feeding device connected in sequence; the corrosive environment control system is a control operation box, which is connected to the gas pressure stabilizing device and the feeding device; the corrosive reaction mechanism comprises a stress stretching device, a high-temperature ammonia decomposition stress corrosion device and a high-temperature ammonia decomposition chemical corrosion device which are separately arranged, and an ammonia tail gas treatment device; the high-temperature ammonia decomposition stress corrosion device and the high-temperature ammonia decomposition chemical corrosion device are simultaneously connected to the feeding device and the ammonia tail gas treatment device; the material corrosion testing system based on a complex environment of high-temperature ammonia decomposition can adjust the corrosive medium component, corrosive medium temperature, corrosive medium pressure and corrosive medium flow rate according to demand, and simultaneously realize stress and chemical corrosion testing and evaluation of multiple samples.

The application discloses a kind of theoretical model for evaluating pipeline steel macro-battery corrosion under elastic-plastic deformation, the theoretical model includes following physical field and coupling mechanism thereof: physical field: (1) stress-strain field: the elastic-plastic mechanics constitutive model based on von Mises yield criterion and isotropic hardening criterion is used to characterize the mechanical behavior of pipeline steel;(2) electrochemical field: the electrode kinetics model based on Tafel equation is used to characterize the corrosion reaction kinetics process on the surface of pipeline steel;Coupling mechanism: the mechanical-electrochemical double-path coupling mechanism for characterizing macro-battery corrosion.The model realizes the quantitative description of the macro-battery corrosion behavior induced by elastic-plastic deformation by coupling the mechanical deformation and electrochemical corrosion process of the material.The application realizes the two-way interaction of stress-strain field and electrochemical field under the background of macro-battery corrosion, and can quantitatively reveal the regulation of deformation on the intensity and evolution process of macro-battery corrosion.

This disclosure provides a solar cell, a semi-finished cell, and a fabrication method thereof, belonging to the field of solar cell technology. The semi-finished cell includes a cell body and a porous silicon layer serving as a texturing precursor. The porous silicon layer is disposed at least on the front surface of the cell body, with a porosity of 30%–70% and an average pore depth of 50 nm–500 nm. By preparing a porous silicon layer at least on the front surface of the cell body, this disclosure provides numerous and uniform nucleation sites for subsequent alkaline texturing. In an alkaline solution, the corrosion reaction preferentially begins from the pore edges, guiding the uniform and dense growth of the pyramid texture. Furthermore, the porous silicon layer serves as an effective anti-reflection structure, forming a dual anti-reflection effect with the subsequently formed pyramid textured surface, reducing reflection. In addition, the uniform textured surface further formed from the porous silicon layer has lower surface recombination, which is beneficial for improving minority carrier lifetime and increasing cell efficiency.

The invention relates to a self-repairing anticorrosive coating, a preparation method thereof, a photovoltaic module and a frame thereof. According to the self-repairing anticorrosive paint and the preparation method thereof, a specific amount of the solvent, the repairing agent nanometer container and the curing agent are added into the film-forming resin, the repairing agent is a heterocyclic compound capable of being subjected to coordination reaction with metal ions, heteroatoms of the heterocyclic compound comprise at least one of N, S and O, the nanometer container serves as a carrier of the repairing agent, and the curing agent is a curing agent. When corrosive media such as water molecules permeate into the surface of the frame to cause local corrosion, the repairing agent diffuses out of the nanometer container at the invasion position of the corrosive media and is subjected to coordination reaction with metal ions generated by corrosion reaction to form a new local protection film, and further diffusion of corrosion is limited. In addition, migration of metal ions can be well limited through the coordination effect, and then the effect of controlling PID effect deterioration is achieved. Therefore, the stability and the long-term effect of the frame and the assembly in severe environments such as high humidity and high salt can be improved.

The utility model provides a kind of corrosion-resistant EPS reaction kettle feeding device, it is related to feeding equipment technical field, including the feeding assembly of being set on the upper end of reaction kettle main body, feeding assembly is provided with multiple groups, the feeding assembly of multiple groups is evenly encircling distribution about the outer wall of reaction kettle main body, cavity of outer frame is equipped with electric push rod, the output end shaft of electric push rod is connected with storage tank, one end of storage tank is rested on the upper wall of reaction kettle main body, according to production formula, different kinds of raw materials are respectively connected in multiple feeding assemblies encircling distribution in the outer wall of reaction kettle main body, multiple feeding assemblies can ensure that multiple raw materials can be simultaneously fed, drive electric push rod, electric push rod converts electric energy into mechanical energy, according to preset program, its output end does linear extension and contraction motion, when electric push rod lengthens, drives the one end of storage tank connected with its shaft to elevate, so that storage tank is in inclined state, with the inclination of storage tank, internal raw materials flow to discharge port under the action of gravity, realize the purpose of synchronous feeding.

The invention relates to the technical field of rock tests, in particular to an experimental device and method for dynamically corroding reservoir rock through CO2 in different phase states, the experimental device comprises a generation system used for generating CO2 in different phase states, and the generation system is communicated with a dynamic corrosion reaction system and an ion concentration detection system through a six-way valve; the generation system comprises a first water bath box, and a surge tank is arranged in the first water bath box; a temperature control system for controlling the temperature in the first water bath box is arranged in the first water bath box; the pipeline between the pressure release valve and the six-way valve is communicated with a pressure real-time monitoring system; the pressure real-time monitoring system is communicated with the pipeline between the dynamic corrosion reaction system and the dynamic circulating system; the dynamic corrosion reaction system comprises a second water bath box, a reaction kettle is arranged in the second water bath box, a sample bracket for placing a plurality of rock samples is arranged in the reaction kettle, and the reaction kettle is filled with a soaking solution for soaking the rock samples. According to the method, a theoretical basis can be effectively provided for selection of the CO2 storage phase state.

The invention relates to the technical field of aqueous zinc ion batteries, in particular to a negative electrode material for a zinc ion battery, a preparation method of the negative electrode material, an electrode and the zinc ion battery. The preparation method of the negative electrode material for the zinc ion battery comprises the following steps: 1) soaking zinc powder in a first treatment solution for 0.5-2 hours, carrying out solid-liquid separation, and drying to obtain pretreated zinc powder; the temperature of the first treatment liquid is 0-25 DEG C; the first treatment liquid comprises a polymerization initiator and a first solvent; and 2) soaking the pretreated zinc powder in a second treatment solution for 0-2 hours or spraying a second treatment solution on the surface of the pretreated zinc powder, then reacting, carrying out solid-liquid separation, drying, and forming a functional layer on the surface of the pretreated zinc powder, the second treating fluid comprises a pyrrole monomer and a second solvent. The negative electrode material prepared by the preparation method disclosed by the invention can inhibit corrosion reaction and reduce hydrogen evolution reaction, improve the cycling stability of the zinc ion battery and prolong the service life of the zinc ion battery.

The invention belongs to the technical field of copper foil production, and particularly relates to a preparation method and device of a galvanic effect-resistant copper foil with highly-enriched active metal on the surface, and the preparation method comprises the following steps: carrying out cathode electroplating thickening on a raw material copper smooth surface by using an electroplating electrolytic solution, and forming an electroplating thickening layer on the surface of the raw material copper smooth surface; and performing active metal ion electroplating on the rough surface of the raw copper by using an active metal mixed solution to form a surface activation layer on the rough surface of the raw copper. According to the preparation method of the anti-galvanic-effect copper foil with the highly-enriched active metal on the surface, an electroplating thickening layer can be formed on the smooth surface of the raw copper, and a surface activation layer can be formed on the rough surface of the raw copper; therefore, the problem that galvanic corrosion reaction is easy to occur at the bottom of the copper foil due to the reaction of the existing copper foil and silver ions is solved, and the micro short circuit hazard of PCB circuit burrs or burr bridging caused by corrosion is effectively avoided.

The invention discloses a crevice corrosion and flash corrosion resisting liquid medicine for an MSAP process and a using method of the crevice corrosion and flash corrosion resisting liquid medicine. The flash etching liquid medicine comprises 40-60 g / l of sulfuric acid, 20-30 g / l of hydrogen peroxide, 0.5-2.0 g / l of a stabilizer, 2.0-5.0 g / l of hyperbranched polyol, 0.1-0.5 g / l of tungstate, 0.02-0.04 g / l of a wetting agent and the balance of water. The number-average molecular weight of the hyperbranched polyol is 500 to 1200, and the hydroxyl value of the hyperbranched polyol is 500 to 700 mKOH / g. Through the synergistic effect of the hyperbranched polyol and the tungstate, the corrosion reaction in the included angle gap is effectively inhibited, the bottom lateral erosion amount can be controlled within 0.5 [mu] m, the problem of accelerated lateral erosion caused by the included angle gap in the IC carrier plate MSAP process is solved, and the processing requirement of a high-end IC carrier plate for a fine circuit is met.

This invention relates to metal protective coating material technology, aiming to provide a method for preparing BTA-ZIF-8@Ce-MMT nanocomposite powder supported by dual corrosion inhibitors. MMT particles, after ball milling, are ultrasonically dispersed in water, and the supernatant is collected after natural sedimentation. Cerium nitrate hexahydrate and an appropriate amount of deionized water are added, and the mixture is reacted at 25°C with stirring for 24 hours. Zinc nitrate hexahydrate is then added and stirred until completely dissolved. A mixed solution of benzotriazole (BTA), 2-methylimidazole, and anhydrous ethanol is then added, and the mixture is reacted at 25°C with stirring for 12 hours. The reaction solution is centrifuged, and the precipitate is washed and dried to obtain the nanocomposite powder. This product can simultaneously inhibit corrosion in both the anodic and cathodic regions of the corrosion reaction micro-zone, further improving the active protection effect. The reaction only requires room temperature conditions, simplifying the synthesis process. The powder exhibits good dispersibility in water-based epoxy coatings and is not prone to agglomeration. This method reduces preparation costs and broadens the application range of rare earth elements.

The present application relates to the technical field of artificial rutile, and particularly discloses a method for improving the efficiency and purity of artificial rutile produced by reducing ilmenite corrosion, which comprises the following steps: preparing a corrosion solution by mixing hydrochloric acid and industrial water, and then injecting the corrosion solution into a stirring corrosion tank; adding a catalyst into the stirring corrosion tank according to a set proportion; adding reduced ilmenite into the stirring corrosion tank, and simultaneously performing aeration by using a Roots blower to generate a hydration iron oxide and an artificial rutile slurry; and separating the hydration iron oxide and the artificial rutile slurry to obtain the artificial rutile. In the method for improving the efficiency and purity of artificial rutile produced by reducing ilmenite corrosion, the corrosion reaction is quickly and effectively performed by adding the catalyst, the corrosion reaction time is greatly shortened, the production efficiency is improved, and the energy consumption cost is saved; meanwhile, the catalyst, the corrosion solution and the washing solution can be recycled, the chemical reagent cost is saved, and the pollution to the environment is reduced.

The application provides a spent fuel reprocessing high-temperature nitric acid full stress corrosion simulation experiment device, and relates to the technical field of spent fuel reprocessing. The device comprises an electric control system and a load loading system, a corrosion reaction system, an electrochemical test system, a temperature control system and a tail gas treatment system connected with the electric control system. The load loading system is used for loading various loads. The corrosion reaction system is composed of a glass reaction tank and a reaction tank cover. The reaction tank contains nitric acid solution for corrosion reaction of the sample. The sample penetrates the glass reaction tank and is sealed by a sealing kit. The electrochemical test system is arranged in the reaction tank cover and used for electrochemical test of the sample corrosion reaction. The temperature control system is used for adjusting and controlling the temperature of the sample corrosion reaction of the load loading system. The tail gas treatment system realizes treatment of the tail gas generated in the sample corrosion process. The device solves the problem that the stress corrosion test under high-temperature nitric acid cannot be carried out at present.